MTW European Trapezium Mill

MTW European Trapezium Mill is the latest grinding equipment, with its own knowledge patents, have reached modern advanced level in the world. This series mill absorbing the European advanced technology and many engineers’ ripe experience, combining the actual requirement and proposal of our 9518 customers’, have been developed on the basis of our professional engineers’ hard researching.

MTW European Trapezium Mill Features

1. Bevel gear overall drive: the traditional grinding mill is driven by speed reducer and coupling. It is hard to be installed. And there will be too much noisy, and the efficiency is lower. MTW series mill is driven by bevel gear, so its structure is compacter, easy to be installed and more efficient.

2. Inner automatic Thin-Oil lubricating system: the traditional mill adopts grease lubrication, so the lubricating resistance is stronger, the temperature will be higher soon, the bearing life is shorter. MTW series mill adopts inner L.O. pumps, so the main shaft bearing and bevel gear can be lubricated without an additional lubrication system.

3. Arc air channel: all of the air channel of traditional grinding mill is upright board type. In this case, there will be stronger resistance when the air impacts the air channel board, and the energy of collisions of air molecules loss heavily, as a result, the air channel will be jammed easily because of the eddy air flow. MTW series mill adopts a cambered air channel, the tangential air goes into air channel easily because there is small resistance. And the inner outlet is very good for the grinded material to spread around and avoid grinding material jammed.

4. Cambered shovel with renewable edge: The traditional shove is integral and edge always be worn out quickly, so you have to renew it in short time which affects the working time and wastes too much steel. The shovel edge of MTW series mill adopts high wearable limit alloy, its life will be longer. You only want to change the edge, not the whole shovel. so the steel material is saved. In addition, because the traditional shovel is plane type, the grinded material stacks on the same plane when it is scooped up. So the middle parts of the roller is worn out heavily. But the cambered shovel can scoop up the grinded material in the same vertical plane, that makes the rollers and ring worn equally. At the same, the grinding efficiency is higher and capacity is higher.

5. Separated cyclone: There is a separated structure between inner piping and mixed air and powder. The efficiency and precision of classifying is promoted highly.

6. No resistance snail shell (small checking door so that there is not an eddy air flow): In the traditional grinding mill, the checking door of snail shell is prominent, that mean the checking door and snail shell are not on the same plane. So there will be eddy air flow easily come into being. As a result, the energy waste is bigger. MTW series mill make the inner surface of checking door stay with the inner surface of snail shell on the same plane, so the eddy air flow is avoided efficiently.

7. Perfect outward appearance: Both of the inner parts and outer part of the MTW series mill adopt advanced structure and beautiful arc structure design. This makes the mill advanced and beautiful.

MTW European Trapezium Mill Working Principle

First, raw material should be crushed by the jaw crusher to the size specified, and then the crushed stuff is elevated into a hopper from which the stuff is loaded, through the vibrating feeder, evenly and continuously into the grinding chamber for power-processing. After this, the ground stuff is carried by the air into the separator for screening. The fine powder are blow into the cyclone collector and are poured out through the output-powder valve as the final products and the rough stuff after the screening will be recycled back into the grinding chamber for regrinding. The set’s airflow system is closely sealed up and circulated under condition of negative pressure.

MTW European Trapezium Mill Technical Data

Table 1

Model Specification Name

MTW110

MTW138

MTW175

Quantity of roller (PCS)

4

4

5

Inner diameter of ring (mm)

Ф1100

Ф1380

Ф1750

Rotary speed of main frame(r/min)

120

96

75

Max. Feeding size(mm)

< 30

< 35

< 40

Output size (mm)

1.6～0.045
The fineness
is 0.038

1.6～0.045
The fineness is 0.038

1.6～0.045
The fineness
is 0.038

capacity (t/h)

3.5～10

6.5～15

11～25

Overall dimension (mm)

8910×6950
×9010

9860×8340
×10227

13500×11500
×9500

Total weight (t)

18

28.5

46

Table 2

Name

Item

Unit

Specifications & Technical Data

MTW110

MTW138

MTW175

Motor for main frame

Model

Y280M-6

Y315M1-6

Y355M1-6

Power

kW

55

90

160

Rev.

rpm

980

990

990

Motor for separator

Model

YCT200-4A(YCT200-4B)

YCT250-4A(YCT225-4A)

YCT225-4A(YCT250-4A)

Power

kW

5.5(7.5)

18.5

11(18.5)

Rev

rpm

125～1250

125～1250

125～1250

Motor for Elevator

Model

TH250

TH250

TH315

Motor model

Y100L2-4

Y100L2-4

Y112M-4

Power

kW

3

3

4

Rev

rpm

1420

1420

1420

Motor for Blower

Model

Y250M-4

Y280M-4

Y315L1-4

Power

kW

55

90

160

REV

rpm

1480

1480

1480

Motor for Jaw Crusher

Model

PE

250×400

250×400

250×750

Y180L-6

Y180L-6

Y200L2-6

Power

KW

15

15

22

REV

rpm

970

970

970

Electro-Magnetic Vibrating Feeder

Model

GZ2F

GZ3F

GZ4F

Power

W

150

200

450

Remarks: Capacity is based on grinding limestone, 80% passing-through. If the technical data and overall dimension is changed, it is subjected to the operation manual which is together with delivered goods.

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